Steel - Etching method for macroscopic examination
Abstract
ISO 4969:2015 establishes guidelines for the macroscopic examination of steel by hot etching, room temperature etching and electrolytic etching. The method has very wide application. Selection of the type, concentration and temperature of the reagent, the etching apparatus and the conditions of surface preparation of the test piece make it possible to achieve the required aim. NOTE It might be difficult to see fine voids and cracks and discriminate between them and determine their nature by macroetching.
Begin
2026-08-19
WI
EC101221
Planned document number
DIN EN ISO 4969
Project number
06237163
Responsible national committee
NA 062-01-111 GA - Joint working committee NMP/FES: Metallographical test methods
Responsible european committee
CEN/TC 459/SC 1 - Test methods for steel (other than chemical analysis)
Responsible international committee
ISO/TC 17/SC 7 - Methods of testing (other than mechanical tests and chemical analysis)
